Liquid-fuel burner.



-L. s. PROVIN. I LIQUID FUEL BURNER.

I APPLICATION-FILED NOV. 29, 191Q. '9'89 ,'640.-

Inventor by I I Attorneys Patented Ay /18,1911. 7*

v U E STAfrns PATENT OFFICE.-

monnm'a s rnovm, or. NEVADA, Mrssoum.

LIQUID-FUEL BURNER.

TQ. all whom it may concern:

Be it known that I, LEONARD S. Pnovnv, a citizen'of the United States, residing at Nevada, in the county of Vernon and State of Missouri, have invented a new and useful Liquid-Fuel Burner, of which the following is a specification. A

It is the object of the present invention to provide an'improved liquid fuel burner, the primary aini of the invention being to provide a burner ofthis type so constructed that perfetgt vaporization of the liquid fuel will be'insured prior to its ignition.

Another iiovel feature of the invention resides in the means provided for feeding the liquid fuel over the surface of a shell of the burner which shell is heated to such degree as to vaporize the liquid fuel, it being, after vaporization, ignited at the lower end of the member upon the surface of which it is vaporized,'means being provided for admitting air to the vaporized fluid immediately prior to its ignition.

With the' above and other objects in view, the invention resides in the general construction and arrangement of'parts set forth in the appended claims and shown in the accompanying drawings in which-- Figure 1 is a vertical sectional view throu h a burner constructed in accordance with the present invention. Fig. 2 is a horizontal sectional view on the line 2--2 of Fig. 1 looking in a downward direction.

In the drawings, the burner embodying the resent invention is illustrated as including, in its structure, an inner shell '5 which is preferably cylindrical although it at itstop aset 6 and at its base is formed with an outstanding flange 7 extending entirely therearound and having an upturned edge 8:

i A shell 9, also cylindrical in form and closed at its top as at 10, is fitted over the shell 5 and rests at its said top upon upstanding spacing lugs 11 upon the upper side of, the

top 6 of the inner shell, these lugs serving to space the tops 6 and 10 of the shells 5 and 9 respectively. The shell 9 is of greater diani eter than the shell 5 and consequently itsvertical wall is spaced from the vertical wall of the shell For a purpose to be presently explained, the shell formed, in its verti- ,cal wall, nea r its lower end, with a plurality of openings 12 here shown as arranged in two series one above another. The lower above the flange 7.

Formed upon the upper surface of the top 6 of the inner shell 5 are upstanding overflow ribs 13 and 14, these ribsbeing arranged concentrically with the rib 14 surrounding the rib 13. The upper edges of the ribs are spaced from the under-surface of the top 10 of the outer shell. A fuel supply pipe indicated by the numeral 15 is extended upwardly into the shell 5 and opens at its upper end through the top of the said shell. This pipe 15, at its point of insertion through the top 6 of the inner shell'is surrounded by the overflow ribs 13 an these ribs ,being-furthermore concentric to the axis of" the shell.

The operation of the burner is as folzlows Liquid fuel of any desired sort is adinitted throughthe fuel supply pipe '15 and flows from the upper end of-this pipe onto the upper surface of the top 6 of the inner shell of the barrier. The level of the: liquid rises until it overflows the rib 13* whereupon the level between this rib and the rib 14::rises until it overflows the rib 14. The fuel will then flow in a filmlfiover the portion of the said uppersurface of the top 6 outwardly of the rib 14, and over the outer surface of the -vertical wall of the said shell 5. fuel in the liquid form reaches .the flange 7 it is ignited. The flames will issue from the space between this flange and lowerend edge .of the vertical wall of the inner shell- 5,as illustrated in Fig. 1 of the drawing, The heat currents generated in this manner As soon as the first quantity of will draw in air through the openings 12;

into the spaceibetween the vertical walls of the shells M nd 9 and this air mixes with .the fuel, which in the meantime has be"-' come vaporized, by reason of the heating of the inner shell 5, and -the'gaseo'u's mixture thus formed, thereafter burns at the flange 1 7. At this point it, will be readily 'under-' stood that the liquid fuel which is held upon the upper-surface of the top 6 of the inner shell 5-by the ribs 13 and 14. 'will'become heated and partly vaporized before it. overfiows'the rib l4 s'tythat .as soon as the film of liquid fuel ,overfiowing "from this rib, touches the surface of the top 6 beyond the-said rib. it will be converted into vapor and in this form will mix with the air entering through the openings 12.

What is claimed is: 1. In a liquid fuel burner, an inner shell closed at its top and having a. circumscribing flange at its base, the said shell being formed with openings near its base, an outer shell fitted over the inner shell and closed at its top and spaced at its top from the top of the inner shell, overflow ribs upon the upper surface of the top of the inner-shell and spaced at their upper edges from the under surface of the topof the outer shell, and a fuel supply pipe opening "through the top of the inner shell.

2. In a liquid fuel burner, an inner shell closed at its top and having-a circumscribing flange at its base, the said shell being formed with openings near its base, an outer shell fitted over the inner shell and closed at its top and spaced at its said top from the to of the inner shell, overflow ribs ,upon t 10 uppersurface of the top of the innerf'shell and spaced at their upper edges I from the under surface of the top of the outer shell, and a fuel supply pipe opening through the top of the inner shell, the said ribs surrounding the point at which the fuel supply pipe opens through'the said top of the inner sh ll.

3; In a liquid fuel burner, an'inner shell gclosed at its top and having a circumscribing' flange at its base, the said shell being formed with openings near its base and upon the upper surface of its top with V overflow ribs arranged concentrically about the inner shell and closed at its top and spaced from the inner shell, and a fuel supply pipe opening axially through the top of the inner shell.

- I In testimony that I claim the foregoing B, V. HARPER.

the axis of the top, an outer shell fitted over I 

